Best Three Season Bottom Floor Insulation
Been trying to wrap my mind about how to go about insulating the bottom of our three season trailer. Our little Sunnybrook Harmony has exposed tanks and I am in the process of installing tank heaters....
Forum Discussion
One thing many don't know about fiberglass batt insulation is that if you compress it, it substantially reduces the R rating. It's very soft an easy to compress. I realize it's very commonly used by the manufacturers though. It's going to get compressed under the tanks for sure.
If I were to do it, my first choice would be Roxul mineral wool insulation. It's denser and doesn't compress anywhere near as easily as fiberglass. It's relatively easy to cut and work with and if it ever got wet, it wouldn't turn to mush.
Closed cell rigid insulation would also be a good choice. You can buy it in various thicknesses. The problem I would see though is working around all the obstructions, tanks, pipes, etc. Do-able, but awfully time consuming.
The insulating would depend on what you are trying to achieve. If you just want to make the floor warmer to walk on, you could get away with an inch or two of rigid foam glued to the underside of the subfloor. If you want to prevent plumbing and tanks from freezing, I'd look at Roxul. If you have a heated underbelly, you don't want to block movement of air.
If I were to do it, my first choice would be Roxul mineral wool insulation. It's denser and doesn't compress anywhere near as easily as fiberglass. It's relatively easy to cut and work with and if it ever got wet, it wouldn't turn to mush.
Closed cell rigid insulation would also be a good choice. You can buy it in various thicknesses. The problem I would see though is working around all the obstructions, tanks, pipes, etc. Do-able, but awfully time consuming.
The insulating would depend on what you are trying to achieve. If you just want to make the floor warmer to walk on, you could get away with an inch or two of rigid foam glued to the underside of the subfloor. If you want to prevent plumbing and tanks from freezing, I'd look at Roxul. If you have a heated underbelly, you don't want to block movement of air.
